Mine is and only sleeps in the sleep suit w/a diaper under. Sometimes I do put socks on her but not often as her core (tummy n back) r really warm when I go to change her. My ped shared w/me that as long as they r warm, she is okay. That he feet n head let off extra heat, hence why the magic suit makers didn't add feet. I keep her room n the house around 70 degrees. She does have her Aden n Anais snuggle, lovey but it's too small to be deemed a blanket :)